The first U.S. H5N9 outbreak has raised concerns as scientists warn of evolving bird flu risks—here's what you need to know about the symptoms.
The U.S. is reporting its first confirmed outbreak of H5N9 avian flu at a California duck farm amid a global surge in its ...
Highly pathogenic avian influenza H5N9 has been identified in U.S. poultry for the first time, after outbreak at a commercial ...